This groundbreaking history tells the little-known story of how, in one of our country's darkest hours, Japanese Americans fought to defend their faith and preserve religious freedom. The mass incarceration of Japanese Americans during World War II is not only a tale of injustice; it is a moving story of faith. In this pathbreaking account, Duncan Ryüken Williams reveals how, even as they were stripped of their homes and imprisoned in camps, Japanese American Buddhists launched one of the most inspiring defenses of religious freedom in our nation's history, insisting that they could be both Buddhist and American. Nearly all Americans of Japanese descent were subject to bigotry and accusations of disloyalty, but Buddhists aroused particular suspicion. Government officials, from the White House to small-town mayors, believed that Buddhism was incompatible with American values. Intelligence agencies targeted the Buddhist community for surveillance, and Buddhist priests were deemed a threat to national security. On December 7, 1941, as the bombs fell on Pearl Harbor, Attorney General Francis Biddle issued a warrant to "take into custody all Japanese" classified as potential national security threats. The first person detained was Bishop Gikyō Kuchiba, leader of the Nishi Hongwanji Buddhist sect in Hawai'i. In the face of discrimination, dislocation, dispossession, and confinement, Japanese Americans turned to their faith to sustain them, whether they were behind barbed wire in camps or serving in one of the most decorated combat units in the European theater. Using newly translated sources and extensive interviews with survivors of the camps and veterans of the war, American Sutra reveals how the Japanese American community broadened our country's conception of religious freedom and forged a new American Buddhism.